Square D™ Panelboard Interior, 3-Phase, Series: NQ Series, 240 VAC/48 VDC, 225 A, 42 Spaces, Short Circuit Current Rating: 100 kA, QB/QD/QJ/QL Breaker, 4-Wire Wiring Configuration, Silver Plated Copper Bus, Panel Mount, Copper Housing, 20 in W x 6-1/2 in D x 38 in H